Lexus IS250 IS220d GSE20 ALE20 - POWER STEERING
REPLACE POWER STEERING ECU ASSEMBLY
DTC C1551 IG Power Supply Voltage Malfunction
DESCRIPTION
If the power steering ECU assembly determines that there is a malfunction in the IG circuit inside the ECU, it outputs this DTC. This DTC is not output when there is an open circuit in the wire harness connected to terminal IG or a battery voltage drop.
| DTC No. | DTC Detection Condition | Trouble Area |
| C1551 | IG power source circuit malfunction inside ECU | Power steering ECU assembly |
INSPECTION PROCEDURE
| 1.REPLACE POWER STEERING ECU ASSEMBLY |
Replace the power steering ECU assembly .
- NOTICE:
- If replacing the power steering ECU assembly, initialize the rotation angle sensor value and calibrate the torque sensor zero point .
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LEXUS IS250, IS220d / GSE20 ALE20